[But so far, U.S. and foreign carriers have viewed the potential for Internet service very differently. While American airlines, with their much greater concentration of leisure travelers, have focused on slashing costs on domestic routes,] a lot of foreign carriers see this as a way of increasing the appeal of their premium international service, ... U.S. carriers are just starting to think about that strategy.

Reinforcing their traditional businesses -- regional jets and corporate jets -- makes a lot of sense. It's familiar turf, they know the customers, and there's much less risk than trying to attack a market that's got two entrenched competitors.